Re: [RFC PATCH 2/2] perf stat: Use event group to simulate PMI onPMI-less hardware counter

[Peter Zijlstra]

On Wed, 2010-11-10 at 23:06 +0800, Lin Ming wrote:
> > The proposed idea was to group with a software hrtimer-based event
> > and use the hrtimer's sample to read the hardware group sibling using
> > PERF_SAMPLE_READ.
> 
> So this is usefull in perf top/record on PMI-less counter?

Correct, Matt was implementing this.
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